# US 4,399,733 A · Semiautomatic swaybrace

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- Number: US 4,399,733 A
- Document ID: US4399733A
- Status: Granted
- Kind: A
- Application number: 06/297,459
- Filed: 1981-08-28
- Granted: 1983-08-23
- Earliest claimed: 1981-08-28
- Assignees: The United States of America as represented by the Secretary of the Air Force
- Inventors: John C. Mick
- Web page: https://patentgrep.com/patent/US4399733A

## CPC

- B64D 7/08: Arrangement of rocket launchers
- B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT

## Abstract

A novel semiautomatic swaybrace is provided for steadying and restraining bombs or the like suspended from the bomb racks of aircraft. The swaybrace of this invention comprises a spiral wedge and torsion/compression spring uniquely configured to allow the swaybrace to be cocked to a retracted condition prior to loading of a bomb rack and then to be released to automatically and firmly seat itself against the load. The interaction of the forces stored in the compressed spring with the spiral wedge allow automatic extension of the swaybrace.

## Claims

### Claim 1

A swaybrace for steadying a load suspended from an aircraft, comprising:
a. a threaded rod;
b. a sleeve, supported by said aircraft, having threads on an inwardly disposed surface thereof, for receiving and supporting said threaded rod for rotation about its axis; and
c. torsional spring means, supported by said sleeve, and engaging said rod, for simultaneously rotating and axially extending said rod along said threads into contact with said load.

### Claim 2 (depends on 1)

The swaybrace as recited in claim 1 further comprising a bracing pad attached to said rod at the end thereof contacting said load.

### Claim 3 (depends on 1, 2)

The swaybrace as recited in claim 1 or claim 2 further comprising releasable latching means for holding said rod in a retracted position within said sleeve against the force of said spring means.